yesterday my w718 came. everything was ok until i turned on wifi. rebooted and started rebooting all the time. factory reset helped turn it on back again but problem remains, even with bluetooth. that's not all, when i tried to connect it to pc with cable to flash it, without battery, keep showing up on windows and dissapearing non-stop, with installed usb drivers !!! i'm going crazy, tried on win xp, same thing, what am i doing wrong!?